OK so I've only had this problem recently but i figured ill ask around. So my sami has been running kind of crappy lately. did some investigating only to find out that the previous owner had replaced mechanical fuel pump with electrical. wouldst be a problem if he didn't replace it buy pulling the fuel filter all together and putting the new pump in its place. i put a new filter inline with the pump and it seemed to run ok. but then today i tried to drive it around the block and it completely stalled out on me. couldn't start it for about a min or two. had no starter noise but still had power seemed as if it just would turn the engine. now when its on it idles but barley and will die sometimes or struggle to stay up. need some help on this one please.